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WEST SYSTEM G/Flex® Epoxy

G/flex 655 is a new epoxy introduced by WEST SYSTEM in mid-June 2007. G/flex is a tough, resilient epoxy engineered for a superior grip to metals, plastics, glass, masonry, fiberglass, and wet and difficult-to bond woods. G/flex 655 Thickened Epoxy Adhesive comes with a thickening agent already added. G/flex offers important features:

  • Toughness and Flexibility G/flex has been toughened. This gives G/flex the ability to make structural bonds that can absorb the stresses of expansion, contraction, shock, and vibration. G/flex is resilient and impact resistant. With a modulus of elasticity of 150,000 psi (WEST SYSTEM 105 Resin/205 Hardener has a modulus of elasticity of 450,000 psi), G/flex is more flexible and can deflect further than WEST SYSTEM 105/205, while being much stiffer than typical adhesive sealants.
  • Bonds to wet and damp surfaces G/flex has the ability to glue damp woods. It can be used on wet surfaces, even underwater when applied with specific techniques.
  • Excellent adhesion to hard-to-bond woods G/flex adheres tenaciously to difficult-to-glue hardwoods, both tropical and domestic varieties. This is important since many of the exotic and tropical species now being used to replace traditional woods present bonding challenges.
  • Bonds well to a variety of materials G/flex is ideal for bonding a variety of materials, including dissimilar ones. G/flex has a superior grip so that it can be used to bond to metals, plastics, glass, masonry, and fiberglass. G/flex is ideal for repairs to aluminum boats and polyethylene and ABS canoes and kayaks. It can also be used to wet out and bond fiberglass tapes and fabrics.
  • Ease of use G/flex is a simple two-part epoxy system. Resin and hardener are mixed in a 1:1 mix ratio by volume. G/flex provides a relatively long open working time of 45 minutes. It cures in 7-10 hours and can be used in cool temperatures. Because it is simple to mix and use, G/flex is an excellent starting point for customers new to epoxy use.
  • Versatility G/flex can be modified with WEST SYSTEM fillers and additives if you need to meet particular bonding needs. Adding G/flex to other WEST SYSTEM epoxies can improve their toughness and flexibility.
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
650-2G G/flex Liquid Epoxy, 1gal. resin, 1gal. hardener 9681453 650-2G
In stock online.

$299.99

650-32 G/flex Liquid Epoxy, 16oz. resin, 16oz. hardener 9681461 650-32
In stock online.

$69.99

650-8 G/flex Liquid Epoxy, 4oz. resin, 4oz. hardener 9223132 650-8
In stock online.

$24.99

G/Flex 650 Hardener 4.75 Gal. 9681511 650-CH
Delivery within 2 - 3 weeks.

$820.08

G/Flex 650 Resin 4.75 Gal. 9681529 650-CR
Delivery within 2 - 3 weeks.

$448.10

655-2G Thickened G/flex Epoxy, 1gal. resin, 1gal. hardener 9681479 655-2G
In stock online.

$339.99

655-2QT Thickened G/flex Epoxy, 1qt. resin, 1qt. hardener 9681487 655-2QT
In stock online.

$92.99

655-8 Thickened G/flex Epoxy, 4oz. resin, 4oz. hardener 15537087 655-8
In stock online.

$25.99

G/Flex 655 Hardener 4.75 Gal. 9681495 655-CH
Delivery within 2 - 3 weeks.

$836.78

G/Flex 655 Resin 4.75 Gal. 9681503 655-CR
Delivery within 2 - 3 weeks.

$525.18

Product Description

G/flex 655 is a new epoxy introduced by WEST SYSTEM in mid-June 2007. G/flex is a tough, resilient epoxy engineered for a superior grip to metals, plastics, glass, masonry, fiberglass, and wet and difficult-to bond woods. G/flex 655 Thickened Epoxy Adhesive comes with a thickening agent already added. G/flex offers important features:

  • Toughness and Flexibility G/flex has been toughened. This gives G/flex the ability to make structural bonds that can absorb the stresses of expansion, contraction, shock, and vibration. G/flex is resilient and impact resistant. With a modulus of elasticity of 150,000 psi (WEST SYSTEM 105 Resin/205 Hardener has a modulus of elasticity of 450,000 psi), G/flex is more flexible and can deflect further than WEST SYSTEM 105/205, while being much stiffer than typical adhesive sealants.
  • Bonds to wet and damp surfaces G/flex has the ability to glue damp woods. It can be used on wet surfaces, even underwater when applied with specific techniques.
  • Excellent adhesion to hard-to-bond woods G/flex adheres tenaciously to difficult-to-glue hardwoods, both tropical and domestic varieties. This is important since many of the exotic and tropical species now being used to replace traditional woods present bonding challenges.
  • Bonds well to a variety of materials G/flex is ideal for bonding a variety of materials, including dissimilar ones. G/flex has a superior grip so that it can be used to bond to metals, plastics, glass, masonry, and fiberglass. G/flex is ideal for repairs to aluminum boats and polyethylene and ABS canoes and kayaks. It can also be used to wet out and bond fiberglass tapes and fabrics.
  • Ease of use G/flex is a simple two-part epoxy system. Resin and hardener are mixed in a 1:1 mix ratio by volume. G/flex provides a relatively long open working time of 45 minutes. It cures in 7-10 hours and can be used in cool temperatures. Because it is simple to mix and use, G/flex is an excellent starting point for customers new to epoxy use.
  • Versatility G/flex can be modified with WEST SYSTEM fillers and additives if you need to meet particular bonding needs. Adding G/flex to other WEST SYSTEM epoxies can improve their toughness and flexibility.

Specs

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REVIEW SNAPSHOT®

by PowerReviews
West SystemG/Flex Epoxy
 
4.9

(based on 9 reviews)

Ratings Distribution

  • 5 Stars

     

    (8)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (8)
  • Weather proof (7)
  • Protects well (6)

Cons

No Cons

Best Uses

  • Outdoors (5)
    • Reviewer Profile:
    • Casual/ recreational (6)
    • Was this a gift?:
    • No (5)

Reviewed by 9 customers

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Displaying reviews 1-9

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5.0

The only thing that sticks to my Pelican Bass Raider.

By Grady

from Savannah Georgia

About Me Casual/ Recreational

Verified Buyer

Pros

  • Easy to Use
  • Protects Well
  • Weather Proof

Cons

    Best Uses

    • Outdoor
    • Quick Fix

    Comments about G/Flex Epoxy:

    The only thing that sticks to my Pelican Bass Raider 10E.

    • Was this a gift?:
    • No
     
    5.0

    Love this product!!!

    By Mike

    from Harvey's Lake, PA

    About Me Casual/ Recreational

    Verified Buyer

    Pros

    • Easy to Use
    • Protects Well
    • Weather Proof

    Cons

      Best Uses

      • Works very well with wood

      Comments about G/Flex Epoxy:

      This was the better of products to use on wooden boats....it is flexible which wood is.

      • Was this a gift?:
      • No
       
      5.0

      First time using Epoxy

      By carbonkayak

      from Ohio

      About Me Beginner

      Verified Buyer

      Pros

      • Durable
      • Easy to Use
      • Weather Proof

      Cons

        Best Uses

        • Carbon Fiber
        • Outdoor

        Comments about G/Flex Epoxy:

        I recently used this to patch some worn areas on a carbon fiber kayak. It was a piece of cake with this stuff! Simply cut your patches, mix up a batch of epoxy, brush it on, smooth it out and you're done!

        Below the foot brace was worn, but not in need of a patch, so i simply brushed a bit on the epoxy there and it is silky smooth once again.

        The videos produced by West Marine on the West System really gave all the direction I needed to complete this project.

         
        5.0

        It works!

        By Chadrhigigns

        from Cape Coral FL

        About Me Casual/ Recreational

        Verified Reviewer

        Pros

        • Easy to Use
        • Protects Well
        • Shapes Easily When Wet
        • Very Little Smell
        • Visually Pleasing
        • Weather Proof

        Cons

          Best Uses

            Comments about West System G/flex 655-k Plastic Boat Repair Kit:

            This stuff is just what you would hope it would be, I have used it to fix 4 kayaks so far, and have not needed to sand it down on any of them! I just used an old credit card to smooth it out and I can't believe how well it held it's shape! It took me awhile to find this stuff, but it was just what I was looking for. You do need to flame treat the HDPE plastic to make it stick well, but that is easy to do. My only problem was when I was fixing on of the kayaks I dripped sweat into the mix and it didn't cure as well in only that one spot, so, use a fan I guess... haha I also used this stuff to fix a metal diesel fuel tank, I used fiberglass mat with it and it worked well. Time will tell how well it works, but so far so good. And it looks great! Also I called the company to ask about using it and got a helpful person right away, couldn't have asked for more.

            • Was this a gift?:
            • No

            (1 of 1 customers found this review helpful)

             
            5.0

            Saved me on a wilderness canoe trip.

            By Andre

            from Berlin, NH

            About Me Casual/ Recreational

            Verified Reviewer

            Pros

            • Easy to Use
            • Protects Well
            • Weather Proof

            Cons

              Best Uses

              • Outdoor
              • Quick Fix

              Comments about West System G/flex 655-k Plastic Boat Repair Kit:

              Royalex canoe split at the keel after hitting a huge boulder in class IV rapid. Used G/flex to repair 12 inch long 1/4 gap hole and was able to finish week long wilderness trip in remote Quebec. Would have had to walk out or be rescued otherwise. Fix is still holding up and have continued to use the canoe in rapids on several trips since. Great product. Cannot praise it enough.

              • Was this a gift?:
              • No
               
              4.0

              Easy to use

              By Allegro

              from Chicago

              About Me Advanced

              Verified Buyer

              Pros

                Cons

                  Best Uses

                  • Outdoor

                  Comments about G/Flex Epoxy:

                  Nice portion size, results in less loss due to shelf life expiration, nice to be able to buy smaller portion size

                  • Was this a gift?:
                  • No

                  (0 of 1 customers found this review helpful)

                   
                  5.0

                  this stuff is great

                  By mark s.

                  from carlisle twp. ohio

                  About Me Casual User

                  Pros

                  • Easy To Set Up
                  • Easy To Use
                  • Low Power Consumption
                  • Quality Construction

                  Cons

                    Best Uses

                      Comments about West System G/Flex Epoxy:

                      used it to bond aluminum trim to an old fiberglass hull. re attach rub rail to aluminum channel.
                      bonds dissimilar materials wonderfully.
                      so far no complaints, all repairs that i made with g flex are still in great shape and some of them were made several years ago.

                      • Primary use:
                      • Personal

                      (2 of 2 customers found this review helpful)

                       
                      5.0

                      Great Stuff for Poly Kayaks

                      By Gunner

                      from Jonesboro, AR

                      About Me Casual/ Recreational

                      Verified Buyer

                      Pros

                      • Bonds well
                      • Easy to Use
                      • Protects Well
                      • Weather Proof

                      Cons

                        Best Uses

                        • Outdoor
                        • Polyethylene Kayaks

                        Comments about West System G/flex 655-k Plastic Boat Repair Kit:

                        Easy to mix, just like tubes of toothpaste. Just 1 - 1, cures in 45 minutes in moderate weather. Easy to place into holes in kayaks.

                        When dry you can sand it to a smoother shape.

                        (4 of 4 customers found this review helpful)

                         
                        5.0

                        great product

                        By dead end yak

                        from san gabriel valley

                        About Me Casual/ Recreational

                        Pros

                        • Easy to Use
                        • Protects Well
                        • Weather Proof

                        Cons

                          Best Uses

                            Comments about West System 655-2g Thickened G/flex Epoxy, 1gal. Resin, Hardener:

                            G-Flex 655 is great for repairing kayaks. Its easy to use and this product hardens well against cracks and repairing holes on kayak. The only CON in my opinion is the color of the appoxy its gold i wish it could of been clear but this stuff works great. strongly recommend G-Flex for Kayak repairs.

                            Displaying reviews 1-9

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